Re: [R] Round down numeric values with decimals

Note also that if you wish to include 0 and negative numbers, and your intent is to truncate to 1 digit towards 0, then you must of course check for 0 separately and modify what I suggested for x != 0 to: k <- floor(log10(abs(x))) ifelse(x <0, ceiling(x*10^(-k)), floor(x*10^(-k))) *10^k Note that

Re: [R] Round down numeric values with decimals

This is *not* "rounding down." But this should do it I think: ## (see ?floor) x <- 3.896e09 k <- floor(log10(x)) > floor(x*10^(-k))*10^k [1] 3e+09 There may be even slicker ways, but this is as slick as I can muster... Cheers, Bert Bert Gunter "The trouble with having an open mind is that

[R] Round down numeric values with decimals

Hello, How can I round down numeric values with decimals? For example, > signif(3.896037e+09, digits = 1) [1] 4e+09 The expected result is 3e+09 (and not 4e+09). > signif(8.68542378e-10, digits = 1) [1] 9e-10 The expected result is 8e-10 (and not 9e-10). Thank you very much for